Revert back setup-uv action to v5

Author: iskandergaba

.github/workflows/ci.yml

@@ -20,7 +20,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@v6
+        uses: astral-sh/setup-uv@v5
         with:
           python-version: ${{ matrix.python-version }}